ASTROSAT CZTI

Data Quality Report

Orbit 26243

Creation date: 2024-06-27T19:26:31.892042
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A09_079T03_9000003790_26243cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26243cztM0_level2_quad_clean.evt
Size (bytes)527,307,840114,050,880
Size502.9 MB 108.8 MB
Events in quadrant A3,367,788752,381
Events in quadrant B3,416,234792,477
Events in quadrant C3,694,771756,301
Events in quadrant D5,046,952696,566

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141340
B0142260
C0151280
D0194050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6547310.473499%
B6547530.809531%
C65471362.077287%
D65474737.224683%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7897 6548 8 8 0.10% 0.12%
B 7897 6548 6 6 0.08% 0.09%
C 7897 6548 37 37 0.47% 0.57%
D 7897 6548 400 400 5.07% 6.11%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 13 111550 659.78 843 828 167.8
A 13 254 10652 58.54 843 828 167.8
A 0 226 7487 39.68 843 828 167.8
B 5 172 47503 290.62 857 836 160.6
B 0 230 23143 138.92 857 836 160.6
B 12 111 18415 109.47 857 836 160.6
C 2 16 250049 1310.02 821 828 190.2
C 14 238 133053 695.04 821 828 190.2
C 3 233 87447 455.31 821 828 190.2
D 1 52 1485323 7854.55 791 771 189.0
D 13 168 332780 1756.61 791 771 189.0
D 12 233 216939 1143.71 791 771 189.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter